“The Klu Klux Klan and the racial segregation that was so dramatically challenged during the mid-twentieth century freedom movement was produced not during slavery but rather in an attempt to manage free black people who would have been far more successful in pushing forward democracy for all.”

Source: Darwin, God and the Meaning of Life: How Evolutionary Theory Undermines Everything You Think You Know (2010), p. 156

Source: Plagues and Peoples (1976), Ch.6.

Freedom is a Constant Struggle: Closures and Continuities (2013)

2016, Remarks to the People of Cuba (March 2016)
Context: We do have challenges with racial bias -- in our communities, in our criminal justice system, in our society -- the legacy of slavery and segregation. But the fact that we have open debates within America’s own democracy is what allows us to get better. In 1959, the year that my father moved to America, it was illegal for him to marry my mother, who was white, in many American states. When I first started school, we were still struggling to desegregate schools across the American South. But people organized; they protested; they debated these issues; they challenged government officials. And because of those protests, and because of those debates, and because of popular mobilization, I’m able to stand here today as an African-American and as President of the United States. That was because of the freedoms that were afforded in the United States that we were able to bring about change.

Hayek's Journey: The Mind of Friedrich Hayek (2003)
Context: Hayek died in Freiburg, Germany, on March 23, 1992, less than two months shy of his ninety-third birthday. After 1985, he was unable to work and lost contact with almost all friends and associates. In his last years, almost the only people with whom he had regular contact were his wife, Helene; secretary Charlotte Cubitt, whom he always called “Mrs. Cubitt”; children Larry and Christine Hayek; and Bartley. Hayek was grateful to Cubitt for her assistance from 1977 to 1992. He inscribed in her copy of The Fatal Conceit in 1990: “In gratitude for all her help over so many years F. A. Hayek.”
During his last years, he had periods of more and less lucidity, as well as being ill and depressed. Lord Harris of the Institute of Economic Affairs wrote in his obituary of Hayek that “by 1989 the great man had lost touch with affairs.” He was buried in Vienna, the place of his birth.
[... ] Friedrich Hayek was the greatest political philosopher of liberty during the twentieth century.

2000s, The Real Abraham Lincoln: A Debate (2002), Q&A

1990s, Long Walk to Freedom (1995)
Context: It was during those long and lonely years that my hunger for the freedom of my own people became a hunger for the freedom of all people, white and black. I knew as well as I knew anything that the oppressor must be liberated just as surely as the oppressed. A man who takes away another man's freedom is a prisoner of hatred, he is locked behind the bars of prejudice and narrow-mindedness. I am not truly free if I am taking away someone else's freedom, just as surely as I am not free when my freedom is taken from me. The oppressed and the oppressor alike are robbed of their humanity.
When I walked out of prison, that was my mission, to liberate the oppressed and the oppressor both. Some say that has now been achieved. But I know that that is not the case. The truth is that we are not yet free; we have merely achieved the freedom to be free, the right not to be oppressed. We have not taken the final step of our journey, but the first step on a longer and even more difficult road. For to be free is not merely to cast off one's chains, but to live in a way that respects and enhances the freedom of others. The true test of our devotion to freedom is just beginning.

2000s, 2003, Hope and Conscience Will Not Be Silenced (July 2003)
Context: By a plan known only to Providence, the stolen sons and daughters of Africa helped to awaken the conscience of America. The very people traded into slavery helped to set America free. My Nation's journey toward justice has not been easy, and it is not over. The racial bigotry fed by slavery did not end with slavery or with segregation. And many of the issues that still trouble America have roots in the bitter experience of other times. But however long the journey, our destination is set: liberty and justice for all.

Telegram sent to George Lincoln Rockwell, leader of the American Nazi Party, during Rockwell's "Hate Bus" tour of the Southern US States, 1965. Quoted in an interview on January 24, 1965 and printed in Malcolm X and George Breitman, Malcolm X Speaks: selected speeches and statements, (New York: Grove Press, 1990) 201.
Attributed